A COA issue when changing from WIN10 home to WIN10 Pro

[Windows 10]

In 2019 I purchased a laptop for my wife in Italy (where I am /we are now domicile) with WIN10 Home preinstalled. I am given to understand that networking is better/easier with WIN10 Pro installed and she wanted me to change the operating language to English (from Italian). I have therefore obtained a genuine WIN10 Pro English International edition from a Microsoft OEM system builder company in Germany to install the Pro version, prior to upgrading to WIN11 Pro. The Acer laptop is compatible with the WIN11 system. However, there is no 25 digit COA code provided, presumably as this is a WIN10

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